Research on Pore Characteristics of Hard and Tectonic Coal of Anthracite in Jincheng with Mercury Intrusion Method
Mercury intrusion method is one of the most fundamental ways in testing pore size distribution of porous materials at present. Many of the physical properties of coal, especially adsorption-desorption characteristics depend largely on the pore structure. The pore structure parameters of coal generally have pore volume, specific surface area, pore size distribution, and so on. In order to study the pore structure characteristics of anthracite, the coal samples from Sihe and Daning mines are collected for the testing of pore structures of hard and tectonic coal with mercury analyzer, by which means we can acquaint ourselves with pore characteristics of anthracite and the differences among them, and then, find out the relationship between pore structure characteristics of tectonic coal and outburst risks. The results show that: In anthracite of Jincheng mining area, the specific surface area of tectonic coals is larger than that of hard coals; while median pore diameter and average pore diameter are smaller, and micropores, minipores and mesopores are richer than hard coal; the pore volume and porosity are less than that of hard coals, as well as the macroporous. Maybe this phenomenon is due to the effort of tectonic stress, some cracks and macropores collapse and come into being minipores and mesopores. So the tectonic coals outbursts easily with lower intensity, easily broken.
mercury intrusion method tectonic and hard coal pore structure
WANG Zhaofeng QI Lingling YANG Hongmin CHEN Xiangjun
School of safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China School of safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
1520-1524
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）